Multifunctional DoorbellThis unique wireless doorbell will not only make you miss all your visitors, but also any other electrical devices. Plug the wireless doorbell into the wall, then plug the device into the device as usual, it will not take your socket interface, and the appearance is small and exquisite, it is the first choice for use domestic.300m Long DistanceThis outdoor waterproof wireless doorbell has one transmitter and one receiver, open area up to 300m. Even if there are many obstacles (doors, walls), the doorbell can be heard in time. Dont worry about missing visitors. Ringtones will not interfere with other devices in or near your home. Suitable for homes, apartments, villas, offices, stores, warehouses, hotels, factories, etc. 36 ringtones and 4 volumesHigh-quality speakers, using the most stable music chip, built-in 36 melodies, creating clear and pure sound. 4 adjustable volume levels from 0dB to 100dB, easy to choose and adjust your favorite sound, when the bell rings, you can easily hear it at home. When you press the transmitter, a blue light flashes, which is very hearing-impaired friendly.EASY INSTALLATION & MEMORY FUNCTION Just plug the receiver into the outlet and use the included wristband to fix the battery transmitter on the outside wall, installation is very easy even a living person alone can easily install it. After a power outage, the wireless doorbell will remember your last melody and volume.Windproof and WaterproofThe outdoor waterproof wireless doorbell is made of high quality ABS material, which has excellent fire and flame resistance, and can operate between -22F and 158F.